.question-main{
    width: 650px;
    margin: 15 auto;
}
ul{
    list-style: none;
}
ul li{
    border-bottom: 1px #eee;
    overflow: hidden;
    padding: 0;
}
.avatar-group{
    float: left;
    width: 38px;
    height: 38px;
}
.avatar-group .avatar{
    width: 38px;
    height: 38px;
}
.question-group{
    width: 680px;
    margin: 20px;
}
.question-title{
    margin-top: 10px;
}
.question-title a{
    color: #259;
    font-weight: 900;
}
.question-info{
    text-align: right;
}
.
.question-info .question-author{
    margin-right: 40px;
}